English Grammar - Passed or Past?

source: Learn English with Emma [engVid]    2011年12月28日
http://www.engvid.com/ "Past" or "passed"? Learn the very different meanings of these words and easy tricks to remember them. Watch this free lesson and these common mistakes will be a thing of the past. Take the quiz, too: http://www.engvid.com/passed-or-past/